This video from the USA says about itself:
Dutch Soccer Fans Anti-Semitic Chant To Rivals
12 April 2015
During a match between Amsterdam’s Ajax team and FC Utrecht on Sunday, members of a Utrecht fanbase, known as the Bunnikside and often described as hooligans, began insulting the Amsterdam fans by calling them Jews, in reference to the city’s prominent Jewish population.”
Read more here.
Some Utrecht fans then sang songs about burning Jews. According to the Dutch football association, Utrecht did not do enough against that and now has to pay a 10,000 euros fine.